[Bridge] Antwort: Re: Antwort: RSTP daemon and Marvel switch

[Oliver . Graute]

Hello Satya.

ok fine, I allready tried to adapt my Device Tree Bindings for my IMX28
Board according to this example:

https://www.kernel.org/doc/Documentation/devicetree/bindings/net/dsa/dsa.txt

But at Linux bootup nothing dsa related is detected.

dmesg | grep -E "mii|dsa"
[    2.432681] libphy: fec_enet_mii_bus: probed
[   18.605055] eth0: Freescale FEC PHY driver [Generic PHY]
(mii_bus:phy_addr=800f0000.etherne:01, irq=-1)
[   19.373633] eth1: Freescale FEC PHY driver [Generic PHY]
(mii_bus:phy_addr=800f0000.etherne:03, irq=-1)


Here is my DTS part of the Device Tree:

/*
 *   Marvell Distributed Switch Architecture Device Tree Bindings
 *
 *   A DSA node can contain multiple switch chips which are therefore child
nodes of
 *   the parent DSA node. The maximum number of allowed child nodes is 4
 */

dsa@0 {
        compatible = "marvell,dsa";
        #address-cells = <2>;
        #size-cells = <0>;

        interrupts = <10>;
        dsa,ethernet = <&mac1>;
       // dsa,mii-bus = <&mii_bus0>;
         dsa,mii-bus = <&ethphy1>;
       //  dsa,mii-bus = <&mdio>;

        switch@0 {
            #address-cells = <1>;
            #size-cells = <0>;
            //reg = <16 0>;   /* MDIO address 16, switch 0 in tree */
            reg = <5 0>;   /* MDIO address 16, switch 0 in tree */

            port@0 {
                reg = <0>;
                label = "lan1";
                phy-handle = <&ethphy1>;
            };

            port@1 {
                reg = <1>;
                label = "lan2";
            };

            port@2 {
                reg = <2>;
                label = "lan3";
            };

            port@3 {
                reg = <3>;
                label = "lan4";
            };

            port@4 {
                reg = <4>;
                label = "lan5";
            };

            port@5 {
                reg = <5>;
                label = "cpu";
            };
        };
            switch1uplink: port@0 {
                reg = <0>;
                label = "dsa";
                link = <&switch0uplink>;
            };
        };
*/
    };


/*
 *   The MDIO is a bus to which the PHY devices are connected. For each
 *   device that exists on this bus, a child node should be created.  See
 *   the definition of the PHY node below for an example of how to define a
PHY.

    mdio {
               #address-cells = <1>;
               #size-cells = <0>;
              device_type = "mdio";
              compatible = "marvell,mv64360-mdio";

              ethernet-phy@0 {
                     ......
              };
        };
 */
mdio {
        #address-cells = <1>;
        #size-cells = <0>;
          device_type = "mdio";
        compatible = "marvell,mv64360-mdio";
        status = "okay";

         ethphy0: ethernet-phy@0 {
                 reg = <0>;
         };

         ethphy1: ethernet-phy@1 {
                 reg = <1>;

                compatible = "marvell,88e1149r";
                marvell,reg-init = <3 0x10 0 0x5777>,
                                   <3 0x11 0 0x00aa>,
                                   <3 0x12 0 0x4105>,
                                   <3 0x13 0 0x0a60>;
                };

                 //reg = <0xff>; /* No PHY attached */
                 //speed = <1000>;
                 //duple = <1>;
         };


Best regards,

Oliver

>
>     Yes , you need DSA to distinguish from which port a frame arrived.
>     DSA driver in Linux is available in below path, "drivers/net/dsa/"
>   for reference " http://lxr.free-electrons.com/source/drivers/net/dsa/";
>
> Thank you
> Satya
>
> On 10/28/2014 12:55 PM, oliver.gra...@neuhaus.de wrote:
> >
> > Hello Satya,
> >
> >
> > > RSTP daemon runs in application  and stops the kernel stp and informs
> > > to pass the packets to application layer.
> > > RSTP daemon waits in raw socket with stp filter.
> > > You just need to change the a bit code for port wise that all.
> >
> > ok thanks,
> >
> > do I need the DSA (Distributed Switch Architecture) driver support to
> > distinguish from which port a frame arrived? Currently, I can not
> > distinguish these frames.
> >
> > I can't find DSA drivers in the mainline Linux Kernel for the Marvel
> > Switch Chip (88E6071) . Bur there are drivers for other DSA supported
> > chips from marvel (88E6060).
> >
> > Related Question:
> >
> > How do I customize my device tree bindings (dts file) for DSA support?
> >
> >
> > Best regards,
> >
> > Oliver Graute
> >
>

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